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Palo Verde Sale Leaseback Variable Interest Entities - Narrative (Details) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) | Sep. 30, 2023 USD ($) lease | Sep. 30, 2022 USD ($) | Dec. 31, 1986 trust
Palo Verde Sale Leaseback Variable Interest Entities |  |  |  |  |
Less: Net income attributable to noncontrolling interests (Note 6) | $ 4,306,000 | $ 4,306,000 | $ 12,918,000 | $ 12,918,000 |
APS |  |  |  |  |
Palo Verde Sale Leaseback Variable Interest Entities |  |  |  |  |
Number of VIE lessor trusts | trust |  |  |  |  | 3
Less: Net income attributable to noncontrolling interests (Note 6) | 4,306,000 | 4,306,000 | 12,918,000 | 12,918,000 |
Palo Verde VIE | APS |  |  |  |  |
Palo Verde Sale Leaseback Variable Interest Entities |  |  |  |  |
Less: Net income attributable to noncontrolling interests (Note 6) | $ 4,000,000 | $ 4,000,000 | 13,000,000 | $ 13,000,000 |
Initial loss exposure to the VIE's noncontrolling equity participants during lease extension period |  |  | 324,000,000 |  |
Palo Verde VIE | APS | Maximum |  |  |  |  |
Palo Verde Sale Leaseback Variable Interest Entities |  |  |  |  |
Maximum loss exposure to the VIE's noncontrolling equity participants during lease extension period (up to) |  |  | $ 501,000,000 |  |
Palo Verde VIE | APS | Period Through 2033 |  |  |  |  |
Palo Verde Sale Leaseback Variable Interest Entities |  |  |  |  |
Number of leases under which assets are retained | lease |  |  | 3 |  |
Annual lease payments |  |  | $ 21,000,000 |  |
Palo Verde VIE | APS | Period Through 2033 | Maximum |  |  |  |  |
Palo Verde Sale Leaseback Variable Interest Entities |  |  |  |  |
Lease period (up to) |  |  | 2 years |  |

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